The code is continuously developed, delivered, tested and deployed.
For Example, whenever a developer checks the code in the Source Code Server like Jenkins automated set of unit tests are executed in the continuous process. If the tests fail, the build is rejected, and the developer is notified. If the build passes the test, it is deployed to performance, QA servers for exhaustive functional and load tests. The tests are run in parallel. If the tests pass, the software is deployed in production.
